Packing intervals is a classic SQL task that involves packing groups of intersecting intervals to their respective continuous intervals. In mathematics, an interval is the subset of all values of a given type, e.g., integer numbers, between some low value and some high value.
2024-01-17
Learn how a C# script can easily load data from Excel into SQL Server.
2024-01-15
7,008 reads
Aggregation is a widely used way to summarize the content of a database. It is usually expressed with GROUP BY clause or just using aggregate functions (like COUNT or SUM). When the database engine executes a query with aggregations, it produces individual rows need to compute the required output and then performs the aggregation as (almost) last step. We discuss in this article how to re-write a query manually so that the order of operations will be different and when it can be beneficial.
2024-01-15
Learn how you can handle dimensional modeling in a data warehouse when your data uses different categorization for ages.
2024-01-12
3,065 reads
Nearly a decade ago, I wrote a post called “Bad habits : Counting rows the hard way.” In that post, I talked about how we can use SQL Server’s metadata to instantly retrieve the row count for a table.
2024-01-12
We are adding a consent form to the SQL Server Central website to allow our cookies.
2024-01-10
1,463 reads
Learn about the benefits of mixed extent allocation in SQL Server 2016, along with how you can check this setting or enable it in your database.
2024-01-10
2,005 reads
But nowadays, most services are in the cloud. They're not on your servers; they're somewhere else. With most software-as-a-service (SAAS) offerings, you don't have many options to configure connectivity. What if you need data from one SaaS service into another?
2024-01-10
Azure Data Studio (ADS) is a cross platform query tool for SQL Server. Learn how to get started using ADS to work with your SQL Server instances.
2024-01-09 (first published: 2019-03-04)
8,097 reads
In this article, we will examine how to use Azure Data Studio with a git repository for storing code.
2024-01-09 (first published: 2019-05-14)
10,530 reads
By Steve Jones
No, I’m not quitting or retiring. Just going on vacation, but I leave tonight...
By Steve Jones
I caught this interesting item over on Pinal Dave’s blog: Eleven Interview Questions that...
Comments posted to this topic are about the item Building a SQL Server Fleet...
Comments posted to this topic are about the item Smart AI Agents and Data...
Comments posted to this topic are about the item RegEx Functions IV
I have this data in a table in a SQL Server 2025 database:
EmailAddressID EmailAddress 7 dylan0@ADVENTURE-WORKS.COM 8 Diane1@ADVENTURE-WORKS.COMIf I run this query, which row(s) are returned?
SELECT top 10 * FROM person.EmailAddress WHERE REGEXP_LIKE(EmailAddress, '^D', 'i') AND BusinessEntityID IN (7,8)See possible answers